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Package Included: Total 240 Pcs (86 Atoms+153 Links +1 Removal Tool ) Atoms 30 x H-Hydrogen ( 17mm, White, Hole 1 ) 15 x C-Carbon ( 23mm, Black, Holes 4 ) 10 x O-Oxygen ( 23mm, Red, Holes 2 ) 4 x N-Nitrogen ( 23mm, Blue, Holes 3 ) 4 x S-Sulphur ( 23mm, Yellow, Holes 6 ) 5 x P-Phosphorus ( 23mm, Purple, Holes 5 ) 8 x Cl-Chlorine ( 23mm, Green, Holes 1 ) 2 x Br-Bromine ( 23mm, Dark blue, Holes 5) 2 x I-Iodine ( 23mm, Dark purple, Holes 5 ) 2 x Metal ( 23mm,Silver, Holes 3 ) 2 x B-Boron ( 23mm, Silver, Holes 6 ) Links 60 x Medium ( single, rigid) grey color 25 x Long (double/triple, flexible) blue grey color 60 x Short (for space-filling models) transparent color 8 x V bond (for space-filling models) white color 1 x Remover tool WARNING: CHOKING HAZARD -- Small parts. Not for children under 3 yrs.